function fillthescreen(){
	winH = windowHeight(); //This returns the screen heigth
	heightNeeded=winH-40; //We need to substract the footer height
	if( typeof( window.innerWidth ) != 'number' ) { //Explorer doesn't recognize minHeight
		document.getElementById('co11').style.height=heightNeeded+'px'; //So, we use height (and explroer bug)
	}
	document.getElementById('col1').style.minHeight=heightNeeded+'px'; //For every other browser, we use minHeight
}